固有振动

4The frequencies of teeth may correlate with its volumes and supporting conditions by periodontium.

人类牙的振动固有频率值的大小可能与牙的体积和牙周支持情况有关。

Liu JunHua;Huang ShuGong;Liu JiDongA tri-dimensional model for a jeffcot rotor was reported. A new motion equation of the torsional vibration with natural retation and the conception frequency was presented. The natural frequencies of disk rotors with different geometrical structures and were computed based on the finite-element method, and the factors affecting the coefficient of the natural frequency with rotation were analyzed.

在转轴以一定速度旋转的条件下，推导了考虑转动频率情况下的单质量盘转子扭振运动方程，通过有限元方法对不同几何结构的单质量盘转子在不同转动频率下的扭振固有频率进行了计算，对影响单质量盘转子扭振动频的动频系数进行了分析。

For type III sulcus associated with thyroarytenoid muscle atrophy, autologous fat injection was carried out also. The voice acoustic quality and video laryngostroboscopic data were evaluated before and after surgery.

后者声带固有层存在不同程度的缺陷，不仅可以引起声门闭合不良，声带振动功能也受到影响，患者会出现明显的声音嘶哑。

The results show that both methods of wavelet and EMD are effective, while the method based on EMD, which filters signals and eliminates the noise selectively according to spectrum character of decomposition signal, is the optimal method that can sufficiently keep the non-stationary character inhered in signal and provide well auto-a-daptability, flexibility and affectivity and feasibility in filtering and denoising of rock blasting and impact fragmentation signals.

结果表明：采用小波与EMD 2种滤波、消噪的方法都能获得较好的效果，而基于EMD滤波、消噪法是依据信号分解结果的频谱特性进行选择性的滤波和消噪，更能充分保留信号本身所固有的非平稳特征，具有自适应强和灵活、有效的特点，是一种更好的爆破振动信号滤波、消噪法。

In flexibility of different viscoelasticity material the model is measured and ply falls, calculated respectively the amplitude of transverse stress between factor of loss of the first-order natural frequency that submarine compression carapace is shedding vibration of the damp in field, structure and layer.

在不同粘弹性材料弹性模量和厚度下，分别计算了潜艇耐压壳在流场中阻尼振动的一阶固有频率、结构损耗因子和层间横向应力的幅值。

Through the analysis of vibration modality, the results depicts that the conveyor goes cross shake under its first natural frequency, and it also occurs a big deformation at the joint of cone and cylinder sections.

螺旋输送器的模态分析的结果表明螺旋输送器在第一阶固有频率下是发生横向振动，柱锥内筒连接处变形较大。

Both theoretical and experimental analyses on the natural frequencies and modes of the disk-shaped bevel gear are presented by using thick conical shell theory considering transverse shear d-eformation and rotational inertia, and using experimental modal analysis respectively.

本文介绍了用考虑横向剪切变形和转动惯性的厚锥形壳理论来分析盘形锥齿轮的振动固有频率和振型，并用试验模态分析技术进行测量。

Under four extreme working conditions,the dynamic response of elevator car and the natural frequencies of the instantaneous systems are calculated.

对于电梯运行的各种工况下，文章对振动的响应都作了分析与计算，并对瞬时系统固有频率也作了计算分析。

According to such character of the city viaduc,This article use the large-scale analysis software ANSYS established a model which calculate and analysis,Calculate the natural f...

本文根据城市高架桥的这种特点，运用 ANSYS 大型分析软件建立了计算分析模型，计算了结构的固有频率和振型，并对其进行了振动特性的分析和研究，为城市高架桥结构的抗震设计提供参考。

Because of the thin thickness, the skin of gun-bay structure, the frame plane, the oil tank floor, and the plane that hold up the smoke of aircraft gun is considered as shell element.

运用Lanczos算法对炮舱结构有限元模型进行模态分析，得到炮舱结构前20阶的固有频率和振型，分析前6阶频率下炮舱整体结构以及炮梁的振动特点。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。